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cd9f0ca545
mergejoinable qual clauses, and add them to the query quals. For example, WHERE a = b AND b = c will cause us to add AND a = c. This is necessary to ensure that it's safe to use these variables as interchangeable sort keys, which is something 7.0 knows how to do. Should provide a useful improvement in planning ability, too.
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* planmain.h
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* prototypes for various files in optimizer/plan
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*
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: planmain.h,v 1.43 2000/07/24 03:10:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PLANMAIN_H
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#define PLANMAIN_H
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#include "nodes/plannodes.h"
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#include "nodes/relation.h"
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/*
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* prototypes for plan/planmain.c
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*/
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extern Plan *query_planner(Query *root, List *tlist, List *qual,
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double tuple_fraction);
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/*
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* prototypes for plan/createplan.c
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*/
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extern Plan *create_plan(Query *root, Path *best_path);
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extern Sort *make_sort(List *tlist, Plan *lefttree, int keycount);
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extern Sort *make_sort_from_pathkeys(List *tlist, Plan *lefttree,
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List *pathkeys);
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extern Agg *make_agg(List *tlist, List *qual, Plan *lefttree);
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extern Group *make_group(List *tlist, bool tuplePerGroup, int ngrp,
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AttrNumber *grpColIdx, Plan *lefttree);
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extern Material *make_material(List *tlist, Plan *lefttree);
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extern Unique *make_unique(List *tlist, Plan *lefttree, List *distinctList);
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extern Result *make_result(List *tlist, Node *resconstantqual, Plan *subplan);
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/*
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* prototypes for plan/initsplan.c
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*/
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extern void make_var_only_tlist(Query *root, List *tlist);
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extern void add_restrict_and_join_to_rels(Query *root, List *clauses);
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extern void add_missing_rels_to_query(Query *root);
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extern void process_implied_equality(Query *root, Node *item1, Node *item2,
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Oid sortop1, Oid sortop2);
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/*
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* prototypes for plan/setrefs.c
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*/
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extern void set_plan_references(Plan *plan);
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extern List *join_references(List *clauses, List *outer_tlist,
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List *inner_tlist, Index acceptable_rel);
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extern void fix_opids(Node *node);
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/*
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* prep/prepkeyset.c
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*/
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extern bool _use_keyset_query_optimizer;
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extern void transformKeySetQuery(Query *origNode);
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#endif /* PLANMAIN_H */
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